Abstract: A reusable irrigation sheath for an endoscope includes a sheathing tube connected to an end portion, a fixing unit formed at the end portion, and a rinsing port fluid-connected to the sheathing tube. The irrigation sheath includes an endoscope channel extending through the end portion and the sheathing tube. Once the endoscope shaft has been introduced into the endoscope channel and has reached the work position, the irrigation sheath is fixed to the endoscope via the fixing unit so that the distal end of the endoscope shaft rests against an axial stop and the radial position of the endoscope shaft in the sheathing tube is specified by at least two radial stops such that a rinsing channel located within the sheathing tube and in fluid connection with the rinsing port extends up to the distal end of the sheathing tube.